Cap for a writing instrument



FIG. 1 is a front elevational view of an end plug for writing instrument according to an aspect of the present invention;

FIG. 2 is a right side elevational view of the end plug for writing instrument of FIG. 1, the left side view being a mirror image of the right side view;

FIG. 3 is a rear elevational view of the end plug for writing instrument of FIG. 1;

FIG. 4 is a top plan view of the end plug for writing instrument of FIG. 1;

FIG. 5 is a bottom plan view of the end plug for writing instrument of FIG. 1; and,

FIG. 6 is a front perspective view of the end plug for writing instrument of FIG. 1.

The broken lines in FIGS. 4–6, which define the bounds of the claimed design, form no part thereof. 

The ornamental design for an cap for a writing instrument, as shown and described. 